End System

1060
Ethernet
Ethernet

On corporate and university campuses, a local area network (LAN) is typically used to connect an end system to the edge router. Though, there are many types of LAN technologies, Ethernet is by far the most widespread access technology in corporate and university networks.

Tags lan, end system, router
1256
Physical Media
Physical Media

In the earlier subsection, we gave general idea of some of the most important network access technologies in the Internet. As we explained these technologies, we also indicated the physical media used. For instance, we said that HFC uses a combination of fiber cable and coaxial

Tags end system, router, lan
1609
User-Server Interaction: Cookies
User-Server Interaction: Cookies

We cited above that an HTTP server is stateless. This makes server design simpler and has allowed engineers to develop high-performance Web servers that can manage thousands of simultaneous TCP connections. Nevertheless, it is frequently desirable for a Web site to identify

Tags cookies, end system, back-end database,
1127
DNS -The Internets Directory Service
DNS -The Internets Directory Service

We human beings can be recognized in many ways. For instance, we can be recognized by the names that appear on our birth certificates. We can be recognized by our social security numbers. We can be recognized by our driver's license numbers. Though each of these identifiers

Tags canonical hostname, hierarchical structure, dns servers, routers, internet applications, end system
2003
Transport Layer
Transport Layer

Residing between the application and network layers, the transport layer is the most important part of the layered network architecture. It has the critical role of providing communication services directly to the application processes running on different hosts. The pedagogic

Tags network layer, transport layer, internet protocol, end system, transmission rate, logical communication, segments
2740
Connectionless Transport: UDP
Connectionless Transport: UDP

In this section, we'll examine UDP, how it works, and what it does. We encourage you to refer back to Principles of Network Applications, which contains an overview of the UDP service model, and to Socket Programming with UDP, which discusses socket programming using

Tags socket programming, udp, network layer, application process, end system, tcp, segment
1846
UDP Segment Structure
UDP Segment Structure

The application data shown in Figure 1 occupies the data field of the UDP segment. For instance, for DNS, the data field includes either a query message or a response message. For a streaming audio application, audio samples fill the data field. The UDP header has only four

Tags application data, query message, response message, end system, checksum, udp segment
3057
Reliable Data Transfer
Reliable Data Transfer

Remember that the Internet's network-layer service (IP service) is untrustworthy. IP does not guarantee datagram delivery, does not guarantee in-order delivery of datagrams, and does not guarantee the integrity of the data in the datagrams. With IP service, datagrams can

Tags datagram, router, end system, selective acknowledgment, tcp receiver
1599
Datagram Networks
Datagram Networks

In a datagram network, each time an end system wants to send a packet, it stamps the packet with the address of the destination end system and then pops the packet into the network. As shown in Figure 1, this is done without any VC setup. Routers in a datagram network

Tags datagram network, end system, routers, forwarding table
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